Finding the Third Proportional to 311,038 and 440,038.50

Step by Step Solution

1. Step 1: Write the proportion equation
   311,038 : 440,038.50 = 440,038.50 : x
2. Step 2: Convert to fraction form
   311,038/440,038.50 = 440,038.50/x
3. Step 3: Cross multiply
   311,038x = 440,038.50 × 440,038.50
4. Step 4: Simplify right side
   311,038x = 193,633,881,482.25
5. Step 5: Solve for x
   x = 193,633,881,482.25/311,038
6. Step 6: Final answer
   x = 622,540.92